Lamp with heat sink



FIG. 1 is a top, front and left side perspective view of an embodiment of a lamp with heat sink showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof and a mirror image of a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a lamp with heat sink, as shown and described. 